Automobile light plug



Sept. 6,1927, 1 641,870

F. E. SHAFFER AUTOMOBILE LIGHT PLUG Filed May 12. 1926 Inventor Attorney -ac In the drawing w the ,socketsof Patented Sept. 6, i927.

UNITED STATES PATENT omen FRANK n. sun-ran, on em. LinonY, NEBRASKA, ASSIGNOR or ON -Hair To WILLIAM .PLACKE, or s'r. LInoRx, NEBRASKA.

. AUTOMOBILE Application filed May 12,

The present invention relates to an automobile-light plug suchas is used for con-' 'necting the electric conductors to headlights and the like. 5 The advantages of this improvement are,

first the elimination of the screw used in.

the present light plug, and the possibility of losing the screw when attaching the wire,

secondly, time saved in attaching and dem taching the wire and insuring a positive contact. v

An im ortant object of the invention is to provi ea plug of this nature which is exceedingly simple in its construction and is may be placed on the market at a very low cost.

and claimed.

Figure 1 is a perspective view-of iri1- P 'Y P g thelimprove d plug with the housing engaged as thereon, and

Y Figs.j3 and .4 are transverse sections taken substantially. on the lines 3+3, and 4-4 re ectivel'y,o flFig. 2. p

eferring to the drawing in detail, it will 40 be seen'that the numeral 5 denotes the cylin; .drical shell of the plug formed of suitable insulating material and having the cylindri-.

cal bore 6. 'One end of-the insulating shell 5 is'threaded asis indicated-{at '7 for en- 45 agement with a protective housing 8 .of fiieusual formation. A. pair of diametrical ly opposed pins 9, 'roject radially from the exterlor surface the shell for engage 7 ment with the usual bayonet slots found in 1 automobile headlights. and thelikei The numeral 10 denotes-asolid contact' shank which extends through. the bore 6 of the shell 5 for engagement in the well known l6 manner with the contact of a socket. Thising 8 int The present embo ent of the invention *Having thus described my invention, what end into a cylinder rovided with a slot hav- LIGHT 1 mm.

1926. Serial No.10,597.

shank 11 merges into a cylinder 11 which is slitted to provide a slot 12 having a free spring bridge formed thereacross as is indicated at 13, said bridge being, of course, inte a1 with the cylinder. The extremity of t e cylinder is formed into a spring clip iiicluding a pair of ogee shaped spring arms 1 The single or double-conductor 15 is led thru the o ening 16 in the protective hous- Ee usual manner. The conductor to engage the contact 10 is passed between the spring arms 14- and looped about the spring bridge 13. It will be seen that this engagement is accomplished with very little effort and very quickly in comparison to the usual engaging means now-in common use. I There is practically no likelihood of the conductor. 15 coming loose from the contact 10 as is quite apparent. It is thought that the construction, utility, and-advantages of this invention will now be clearly understood by those skilled in this art without more detailed descri tion. thereof. I

has been'disclosed in'detail since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description Changes in the details of construction may be resorted to without departing from. the

or scope of the invention as herein- Flg. 2 is .a longitudinalsection through a r claimed, or sacrificing any of its advantages. g

I claim as new is A 1. A lug of the class described includi a cylindrical shell having a bore, a solid contact bar in the bore and merging at one mg an integral bri ge extending thereacross and said cylinder terminating in a pair of spriniclip arms of ogee formation.

2'. plugof the class described includin a cylindrical shell having a bore, a soli contact bar in the bore merging at one end into a 'cylinder provided with 'a slot having an integral bridge extending thereacross,

said cylinder terminating in a pair ofspring clip arms of ogee formation, and a protective housing threaded on the end of, the shell. about the cylindrical portion of the contact.

3. As a new article of manufacture, a contact for a (plug of the class described includ I 1 inga soli cylindrical shank portion merging at one end into a concentric cylindrical extension, a portion of the cylindrical extension being slitted and bent inwardly to provide a diametricall extending spring bridge and the extremity of said cylifider merging into ogee shaped spring clip arms formed by slittln the extremity of the cylinder longitudina ly and bending said portions inwardly toward each other.

4. As a new article of manufacture, a contact for a plug including a cylindrical shank menace one end of which is hollow, said hollow endby slitting the extremity of the hollow por tion longitudinally and bending said portions inwardly towards each other.

In testimony whereof I'afilx my signature.

FRANK E. SHAFFER. 

